<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<title>Document</title>
	<style>
		canvas{
			/*display:block;*/
			/*border:1px solid #000;*/
			margin:0 auto;
		}
	</style>
</head>
<body>
	<canvas id='canvas' width='500' height='500'></canvas>
	<input type="text" id='text'>
	<input type="button" value='控制宽度' id='button'>
	<script src='时钟.js'></script>
	<!-- <script src='抬笔.js'></script> -->

</body>
</html>